US3943004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead chloride electrode for seawater battery
Assignee: ESB Inc
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Filing: 1975-02-25
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Granted: 1976-03-09
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Expires: 1995-02-25
Abstract
Abstract A primary seawater battery employs a metallic sheet anode and a sheet cathode. The cathode is lead chloride including an addition of about 1 to about 10 parts by weight of lead oxide per 100 parts by weight of lead chloride. The lead oxide may be litharge, litharge containing lead, red lead or lead peroxide. Other ingredients which may be present in the cathode are carbon black for conductivity and an organic binder such as polyfluoroethylene. The battery is characterized by having a shortened rise time compared to batteries without the lead oxide additive, especially when the battery is used at low temperatures.
Inventors
- 👤 Harold Nickolas Honer
- 👤 Francis P. Malaspina
- 👤 William J. Martini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A seawater battery which comprises a metallic anode, a cathode and a means for separating the cathode from the anode, the cathode comprising active material mix and a grid, the active material mix comprising lead chloride and lead oxide wherein the ratio of lead oxide to lead chloride is within the range of about 1 part by weight lead oxide to 100 parts by weight lead chloride and about 10 parts by weight lead oxide to 100 parts by weight lead chloride.
Claim 2
Dependent Claim
82 words
A seawater battery which comprises a metallic anode, a cathode and a means for separating the cathode from the anode, the cathode comprising active material mix and a grid, the active material mix comprising lead chloride and lead oxide wherein the ratio of lead oxide to lead chloride is within the range of about 1 part by weight lead oxide to 100 parts by weight lead chloride and about 10 parts by weight lead oxide to 100 parts by weight lead chloride.
Claim 3
Dependent Claim
35 words
A seawater battery as defined in claim 1 wherein the ratio of lead oxide to lead chloride ranges from about 2 to 3 parts by weight lead oxide per 100 parts by weight lead chloride.
Claim 4
Dependent Claim
21 words
A seawater battery as defined in claim 1 wherein the active material mix of the cathode contains carbon black and polyfluoroethylene.
Claim 5
Dependent Claim
14 words
A seawater battery as defined in claim 1 wherein the lead oxide is (PbO).
Claim 6
Dependent Claim
16 words
A seawater battery as defined in claim 1 wherein the lead oxide is PbO 2 .
Claim 7
Dependent Claim
32 words
A seawater battery as defined in claim 1 wherein the lead oxide is a mixture of PbO and lead and the lead is about 20% to 30% of the lead-lead oxide mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |